ATMEGA162V-8AU - 8-bit AVR MCU 16KB Flash 8MHz TQFP-44 | Microchip
N.º da peça: ATMEGA162V-8AU ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $6.85 | $6,85 |
| 10 | $6.18 | $61,80 |
| 100 | $5.49 | $549,00 |
| 500 | $4.92 | $2.460,00 |
| 1.000 | $4.38 | $4.380,00 |
ATMEGA162V-8AU Visão geral
Key features include 8 MHz maximum CPU clock speed, 35 programmable I/O lines, dual UART interfaces, SPI, TWI (I2C-compatible), and 16 MIPS throughput at 16 MHz. The "V" suffix designates the 1.8V-5.5V wide operating voltage range optimized for battery-powered applications, while the "-8" speed grade limits maximum clock to 8 MHz at the lower end of the voltage range. The ATmega162V is the low-voltage variant of the ATmega162 family, sharing identical peripherals and pinout with the standard ATmega162 (which operates 2.7V-5.5V up to 16 MHz).
The AVR enhanced RISC architecture executes most instructions in a single clock cycle, achieving throughputs approaching 1 MIPS per MHz. This allows the system designer to optimize power consumption versus processing speed. Five sleep modes (Idle, Power-save, Power-down, Standby, Extended Standby) plus on-chip peripherals make the device suitable for energy-aware designs. The JTAG interface complies with IEEE 1149.1 standard, supporting boundary-scan and on-chip debug via debugWIRE or JTAG.
Typical applications include industrial control systems, battery-powered sensor nodes, building automation, motor control peripherals, USB-to-UART bridges, and embedded communication gateways that need two serial ports. The dual UART is a distinctive feature that simplifies designs requiring simultaneous host and peripheral serial connectivity. Industrial temperature rating (-40C to +85C) and 1.8V minimum Vcc enable 2x AA battery operation with extended runtime.
When designing with this device, note that the "V" variant's lower Vcc_min requires the -8 speed grade; using the standard ATmega162-16AU instead allows higher clock frequencies but raises Vcc_min to 2.7V. Decoupling requires 100nF on each Vcc pin placed within 5mm, plus a 10uF bulk capacitor on the main rail. The 44-TQFP (10x10) footprint is identical to ATmega162-16AU and ATmega162V-8PU, enabling PCB reuse across the family.
This page synthesizes distributor pricing, drop-in alternatives across the ATmega162 family, and practical design notes not found in the manufacturer datasheet alone.
Alternativas drop-in para ATMEGA162V-8AU — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com ATMEGA162V-8AU (mesmo formato e footprint) — diferindo em Throughput, Instruction Set, Core Architecture, Package, Operating Temperature.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
ATMEGA162-16AU
✅ Drop-In✓ Em estoque
$2.45 / unidade
Ver ficha técnica →ATMEGA162V-8AUR
✅ Drop-In✓ Em estoque
$6.62 / unidade
Ver ficha técnica →ATMEGA162V-8AU Classificações máximas e características elétricas
| Core Architecture | AVR 8-bit RISC |
| CPU Clock Speed (max) | 8 MHz |
| Throughput | 8 MIPS at 8 MHz |
| Program Memory (Flash) | 16 KB (8K x 16) |
| SRAM | 1 KB |
| EEPROM | 512 B |
| Operating Voltage Range | 1.8 V to 5.5 V (V variant) |
| Programmable I/O Lines | 35 |
| UART Interfaces | 2 |
| SPI | Yes |
| TWI (I2C-compatible) | Yes |
| JTAG / debugWIRE | Yes (IEEE 1149.1) |
| Encapsulamento | 44-TQFP (10x10 mm) |
| Temperatura de operação | -40C to +85C (industrial) |
| Sleep Modes | 5 (Idle, Power-save, Power-down, Standby, Extended Standby) |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do ATMEGA162V-8AU
| Pino 1 | VCC — Digital supply voltage (1.8-5.5V) |
| Pino 2 | XTAL2 — Crystal oscillator output |
| Pino 3 | XTAL1 — Crystal oscillator input |
| Pino 4 | RESET — Reset input (active low) |
| Pino 5 | PD0 — Port D bit 0 / RXD1 (UART1 receive) |
| Pino 6 | PD1 — Port D bit 1 / TXD1 (UART1 transmit) |
| Pino 7 | PD2 — Port D bit 2 / INT0 |
| Pino 8 | PD3 — Port D bit 3 / INT1 |
| Pino 9 | PD4 — Port D bit 4 |
| Pino 10 | PD5 — Port D bit 5 |
| Pino 11 | PD6 — Port D bit 6 |
| Pino 12 | PD7 — Port D bit 7 |
| Pino 13 | GND — Ground |
| Pino 14 | AVCC — Analog supply voltage |
| Pino 15 | AREF — ADC reference voltage |
| Pino 16 | PA0 — Port A bit 0 / ADC0 |
| Pino 17 | PA1 — Port A bit 1 / ADC1 |
| Pino 18 | PA2 — Port A bit 2 / ADC2 |
| Pino 19 | PA3 — Port A bit 3 / ADC3 |
| Pino 20 | PA4 — Port A bit 4 / ADC4 |
| Pino 21 | PA5 — Port A bit 5 / ADC5 |
| Pino 22 | PA6 — Port A bit 6 / ADC6 |
| Pino 23 | PA7 — Port A bit 7 / ADC7 |
| Pino 24 | AGND — Analog ground |
| Pino 25 | PC0 — Port C bit 0 / SCL |
| Pino 26 | PC1 — Port C bit 1 / SDA |
| Pino 27 | PC2 — Port C bit 2 |
| Pino 28 | PC3 — Port C bit 3 |
| Pino 29 | PC4 — Port C bit 4 |
| Pino 30 | PC5 — Port C bit 5 |
| Pino 31 | PC6 — Port C bit 6 |
| Pino 32 | PC7 — Port C bit 7 |
| Pino 33 | PB0 — Port B bit 0 / T0 |
| Pino 34 | PB1 — Port B bit 1 / T1 |
| Pino 35 | PB2 — Port B bit 2 / AIN0 |
| Pino 36 | PB3 — Port B bit 3 / AIN1 |
| Pino 37 | PB4 — Port B bit 4 / SS |
| Pino 38 | PB5 — Port B bit 5 / MOSI |
| Pino 39 | PB6 — Port B bit 6 / MISO |
| Pino 40 | PB7 — Port B bit 7 / SCK |
| Pino 41 | PE0 — Port E bit 0 / RXD0 |
| Pino 42 | PE1 — Port E bit 1 / TXD0 |
| Pino 43 | PE2 — Port E bit 2 / OC1B |
| Pino 44 | VCC — Digital supply voltage (1.8-5.5V) |
Aplicações típicas
ATMEGA162V-8AU é adequado para 6 aplicaçãos: Industrial Control Systems, Battery-Powered Sensor Nodes, USB-to-UART Bridge Devices, Building Automation Gateways, Motor Control Peripherals, Embedded Communication Modules.
Industrial Control Systems
The ATMEGA162V-8AU fits industrial control with its 8 MIPS throughput, dual UART, and 1.8-5.5V operation. The 35 programmable I/O lines handle sensors, actuators, and HMI peripherals without external expanders. Industrial temperature rating (-40C to +85C) and JTAG debug support simplify field diagnostics. Power-down mode with BOD enables unattended monitoring stations.
Recomendado
Battery-Powered Sensor Nodes
The ATMEGA162V-8AU's 1.8V Vcc_min enables direct 2x AA battery operation without boost converters. Five sleep modes reduce quiescent current to a few microamps, supporting multi-year battery life for wireless sensor nodes. The 1 KB SRAM and 16 KB Flash accommodate ZigBee/BLE protocol stacks or LoRaWAN drivers. The 8 MHz throughput handles periodic sensing and reporting.
Recomendado
USB-to-UART Bridge Devices
The ATMEGA162V-8AU's dual UART is ideal for USB-to-UART bridges that also need a secondary debug port. At 8 MHz the device can bit-bang USB low-speed or drive CDC ACM class devices via software stacks. Industrial temperature rating and 5V tolerance suit industrial USB hosts. JTAG allows firmware updates over USB without external programmers.
Recomendado
Building Automation Gateways
The ATMEGA162V-8AU's dual UART handles Modbus RTU and BACnet MS/TP simultaneously, common building automation protocols. SPI connects to Ethernet controllers or Wi-Fi modules for cloud connectivity. The 16 KB Flash stores protocol stacks, and JTAG supports field firmware upgrades via boundary-scan. Wide Vcc tolerance handles long 24V industrial wiring drops.
Recomendado
Motor Control Peripherals
The ATMEGA162V-8AU generates PWM and timing signals for stepper and BLDC motor control peripherals with its 16-bit timers. At 8 MIPS the device computes commutation tables for small brushless motors in real time. The 35 I/O lines drive gate drivers and read Hall sensors. Dual UART connects to host controllers for command/status reporting in distributed motor networks.
Recomendado
Embedded Communication Modules
The ATMEGA162V-8AU's SPI + UART + TWI peripherals form a flexible gateway between wireless modules and host processors. Its 8 MIPS throughput runs GSM/LoRa/BLE module command interpreters while JTAG enables in-circuit programming during OEM integration. Industrial temperature rating suits outdoor enclosures. 1.8V operation supports solar-powered remote terminals.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para ATMEGA162V-8AU — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | ATMEGA162-16AU | ATMEGA162V-8AUR | ATMEGA162V-8MU |
|---|---|---|---|---|
| Package | 44-TQFP (10x10 mm) | 44-TQFP (10x10 mm) - same | 44-TQFP (10x10 mm) - same | 44-MLF (10x10 mm) - different |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Max CPU Clock | 8 MHz | 16 MHz | 8 MHz | 8 MHz |
| Operating Voltage (Vcc) | 1.8 V to 5.5 V | 2.7 V to 5.5 V | 1.8 V to 5.5 V | 1.8 V to 5.5 V |
| Flash Program Memory | 16 KB | 16 KB | 16 KB | 16 KB |
| SRAM | 1 KB | 1 KB | 1 KB | 1 KB |
| EEPROM | 512 B | 512 B | 512 B | 512 B |
| UART Interfaces | 2 | 2 | 2 | 2 |
| I/O Lines | 35 | 35 | 35 | 35 |
| Temperature Range | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
Principais diferenciais
- Lowest Vcc_min in ATmega162 family at 1.8V (vs ATMEGA162-16AU)
- True drop-in with extended temperature data (vs ATMEGA162V-8AUR)
- TQFP-44 form factor for hand-soldering (vs ATMEGA162V-8MU)
Notas de projeto
Decoupling: Place a 100nF ceramic capacitor on each VCC/AVCC pin within 5mm of the IC. Add a single 10uF tantalum or ceramic bulk capacitor on the main VCC rail. The 1.8V Vcc_min of the V variant requires a regulated LDO output for 2x AA battery systems - the TPS7A02 or similar 200mA LDO provides clean supply. Brown-out detection (BOD) should be enabled in fuses to prevent code corruption at low Vcc.
TQFP-44 thermal management: The TQFP-44 package has theta_JA around 50-60 C/W depending on PCB copper area. At 8 MHz with all peripherals enabled, typical active current is 5-10 mA at 3.3V, dissipating only 30 mW - thermal concerns are negligible for this device. The MLF-44 variant has a thermal pad that must be soldered to a ground copper pour (minimum 1 sq inch) for optimal thermal performance and electrical grounding.
PCB layout for JTAG: Place the 6-pin JTAG header (TCK, TMS, TDO, TDI, VCC, GND) within 50mm of the MCU for reliable debugWIRE/JTAG connection. Use series 100 ohm termination resistors on JTAG signals if traces exceed 25mm. Route XTAL1/XTAL2 traces short (under 10mm) and guard with ground plane to minimize EMI. Keep crystal traces away from switching power or high-current signals.
Common pitfalls: (1) Do not confuse ATmega162 with ATmega162V - the non-V variant cannot operate below 2.7V. (2) The -8 speed grade of the V variant is required for 1.8V operation; do not attempt higher speeds. (3) The dual UART requires proper register configuration for baud-rate generator independent setup. (4) JTAG and debugWIRE cannot be used simultaneously - select one in fuses. (5) ISP programming requires the RESET pin to be pulled high externally.
Informações de conformidade
RoHS compliant per Microchip product page. Industrial temperature grade (-40C to +85C), not AEC-Q100 automotive qualified. Halogen-free status not explicitly stated in available data.